Define and discuss the following terms involving radiation: electric wave,magnetic wave,wavelength,wave amplitude,wave speed,black body,Stefan-Boltzmann law,Wien's law,electromagnetic bands.
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Q50: A _ is a perfect emitter of
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A)are caused by locally intense magnetic fields.
B)appear
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Q53: Differences in emissivity of a substance are
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A)core.
B)corona.
C)photosphere.
D)chromosphere.
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A)seventeenth
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Q58: How long does it take for energy
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